Extremely 26Mg-enriched authigenic clays from the Ediacaran Doushantuo Formation (South China) indicating the coupled carbonate-silicate diagenesis

T Huang, B Shen, X Wang, H Ma, C Li… - Global and Planetary …, 2024‏ - Elsevier
In the aftermath of Marinoan global glaciation (∼ 650–635 Ma), the deglacial intense
continental weathering tended to dramatically lower the atmospheric pCO 2 level, potentially …

Experimental constraints on Mg isotope fractionation during the aragonite–calcite transition and implications for seawater δ26Mg reconstruction

P Zhang, KJ Huang, Y Guo, Z Bao, C Zong… - … et Cosmochimica Acta, 2024‏ - Elsevier
The linkage between the variation of the seawater Mg budget and the long-term carbon
cycle can be elucidated by seawater Mg isotope composition (δ 26 Mg). However, obtaining …

Evaporite sequences as archives for Mg isotope compositions of seawater-Evidence from a Tethys marginal shelf basin in the Anisian

Z Hu, W Li, SV Hohl, P Meister, S Yang, B Zhang, Z **a… - Chemical …, 2024‏ - Elsevier
Evaporites have recently been suggested as a potential archive for recording the Mg isotope
compositions (δ 26 Mg) of coeval seawater. However, episodic dolomitization during the …

Validation of Mg Isotopic Measurements for the Characterisation of Ten Carbonate Reference Materials with Ultra‐Low Mg Mass Fractions

Y An, X Li, W Lu, J Xu, Y Xue, Q Gong… - Geostandards and …, 2024‏ - Wiley Online Library
Magnesium isotope ratios in carbonate rocks and minerals play an important role in tracing
geological and biological processes. We report δ26MgDSM3 values for the first time in ten …

Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis

JP Todes, FR Blattmann, T Vennemann… - The depositional …, 2024‏ - Wiley Online Library
Abstract The Smithian–Spathian boundary interval is characterised by a positive carbon
isotopic excursion in both δ13Ccarb and δ13Corg, concurrent with a major marine …